Which import statement should be included in the source code of a class so that the String class is explicitly imported? Choose from the given choices.
Which import statement should be included in the source code of a class so that the String class is explicitly imported? Choose from the given choices.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Question
Choices:
a. abs
b. absoluteValue
c. ceil
d. ceiling
e. char
f. double
g. floor
h. import java.lang.*;
i. import java.util.*;
j. import java.util.Character;
k. import java.util.Math;
l. int
m. isDigit
n. isNumeric
o. length
p. max
q. min
r. sqrt
s. String
t. substring
u. toCapital
v. toCapitalCase
w. toUpperCase
x. valueOf()
Transcribed Image Text:Which import statement should be included in the source code of a class
so that the String class is explicitly imported? Choose from the given
choices. *
Transcribed Image Text:An application that is created using the Java programming language may be a collection of classes and
each class has methods and data members. Some of the classes involved in an application are predefined
and their methods are designed to perform a specific task. The predefined classes are organized into
collections of classes known as class libraries or packages. Three commonly used predefined classes are
the Math class, the Character class, and the String class. The Math class contains predefined methods
for performing mathematical operations. For example, sqrt is a method in the predefined Math class and
it (the sqrt method) is used to calculate the square root of a number. The Character class contains
predefined methods for character manipulation. For example, the toLowerCase method in the predefined
Character class is used to change a given character value to lowercase if the character value is a capital
letter. The String class contains predefined methods for manipulating strings. To use the methods of a
predefined class, the library or package that contains the predefined class must be imported by an import
statement.
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